Waterproof Standard: IPX-3 headphone form factor: In ear touch screen: NO Estimated Battery Life: 3-5 hours Charging Interface Type: TYPE-C Battery Charging Time: 1-3 hours material: ABS BT Wireless: Bluetooth v5.3 wireless delay time: above 60 ms Control Method: Touch Control battery capacity(mah): 300mah Impedance: 16Ω Maximum Operating Distance: 15m Audio Driver Type: Dynamic coil drive unit Carrying Case Length*Width*Height: 52mm*52mm*25mm Carrying Case Weight: 30g Bluetooth Range: 2402MHz-2480MHz Battery Type: Polymer lithium battery Number of Lithium-ion Cells: 2 Battery Weight: 11g